Observations

Description

Valves are lanceolate with rostrate to short apiculate apices. Valves are not or only slightly dorsiventral. The axial area is narrow and close to the valve midline. The central area is large, round, and more or less symmetric. The raphe is weakly lateral, becoming filiform near the proximal and distal ends. Proximal raphe ends are weakly expanded and deflected dorsally. Distal raphe fissures are hooked toward the ventral side. Striae are radiate throughout.

Original Images

Cite This Page: Bahls, L. (2013). Encyonopsis descriptiformis. In Diatoms of the United States. Retrieved August 02, 2015, from http://westerndiatoms.colorado.edu/taxa/species/encyonopsis_descriptiformis

Encyonopsis descripta var. asymmetrica

Krammer 1997

Citations

Bahls, L. (2013).Encyonopsis from western North America: 31 species from Alberta, Idaho, Montana, Oregon, South Dakota, and Washington, including 17 species described as new.
Northwest Diatoms, Volume 5. The Montana Diatom Collection, Helena, 46 pp.